<template>
  <XtxBread>
    <XtxBreadItem to="/">首页</XtxBreadItem>
    <XtxBreadItem v-if="category.top" :to="`/category/${category.top.id}`">{{category.top.name}}</XtxBreadItem>
    <Transition name="fade-right">
      <XtxBreadItem v-if="category.sub" :key="category.sub.id">{{category.sub.name}}</XtxBreadItem>
    </Transition>
  </XtxBread>
</template>
<script>
import { useStore } from 'vuex'
import { useRoute } from 'vue-router'
import { computed } from 'vue'
export default {
  name: "SubBread",
  setup() {
    const route = useRoute()
    const store = useStore()
    // 通过计算属性得到二级类目的名称和ID，一级类目的名称和ID
    const category = computed(() => {
      const obj = {}
      store.state.category.categoryList.forEach(top => {
        top.children && top.children.forEach(sub => {
          if (sub.id === route.params.id) {
            //设置二级类目
            obj.sub = { id: sub.id, name: sub.name }
            //设置一级类目
            obj.top = { id: top.id, name: top.name }
          }
        })
      })
      return obj
    })
    console.log('category', category);
    return { category }
  }
}
</script>
<style lang="less" scoped>
</style>